https://doi.org/10.1140/epjb/e2008-00408-2
Recursive approach to study transport properties of atomic wire
1
Department of Materials Science, S. N. Bose National Centre for Basic Sciences, Kolkata, 700 098, India
2
Advanced Materials Research Unit, S. N. Bose National Centre for Basic Sciences, Kolkata, 700 098, India
3
Unit for Nanoscience and Technology, S. N. Bose National Centre for Basic Sciences, Kolkata, 700 098, India
Corresponding author: a tanusri@bose.res.in
Received:
30
June
2008
Revised:
17
September
2008
Published online:
5
November
2008
In this study, we propose a recursive approach to study the transport properties of atomic wires. It is based upon a real-space block-recursion technique with Landauer's formula being used to express the conductance as a scattering problem. To illustrate the method, we have applied it on a model system described by a single band tight-binding Hamiltonian. Results of our calculation therefore may be compared with the reported results on Na-atom wire. Upon tuning the tight-binding parameters, we can distinctly identify the controlling parameters responsible to decide the width as well as the phase of odd-even oscillations in the conductance.
PACS: 73.63.-b – Electronic transport in nanoscale materials and structures / 71.15.-m – Methods of electronic structure calculations / 85.35.-p – Nanoelectronic devices
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
